Idaho ISAT / Smarter Balanced & Science Testing Timetable 2026
This complete Idaho testing guide explains the 2025–2026 ISAT schedule, Smarter Balanced ELA and Math testing, Science ISAT grades, Grade 11 high-school assessments, SAT timing, PSAT/NMSQT timing, make-up windows, preparation strategy, and what families should confirm with their school before test week.
Quick Summary: What Idaho Students Take
Idaho uses the Idaho Standards Achievement Test, commonly called the ISAT, as its statewide assessment system. For English language arts and mathematics, Idaho’s ISAT is connected to the Smarter Balanced assessment system. Science is assessed through the Idaho science assessment in selected grades.
Students take the English language arts/literacy assessment during the spring ISAT window.
Students take the math ISAT during the same spring summative testing window.
Science ISAT is administered only at the state-tested science grade levels.
Grade 11 students are included in ISAT ELA, math, science, and the state SAT window.
Interactive Idaho Testing Timetable
Use the filter buttons or search box to find the Idaho assessment window you need. This table is designed for parents, students, counselors, and school content pages.
| Assessment | Grades | Testing Window | Make-up / Extended Window | What Students Should Know |
|---|---|---|---|---|
| ISAT ELA/Literacy Smarter Balanced |
Grades 3–8 and 11 | March 9 – May 1, 2026 | May 4 – May 22, 2026 | Measures reading, writing, language, and analytical literacy skills aligned to Idaho academic standards. |
| ISAT Mathematics Smarter Balanced |
Grades 3–8 and 11 | March 9 – May 1, 2026 | May 4 – May 22, 2026 | Measures problem solving, conceptual understanding, mathematical reasoning, and application skills. |
| ISAT Science Science |
Grades 5, 8, and 11 | March 9 – May 1, 2026 | May 4 – May 22, 2026 | Assesses Idaho science standards at elementary, middle, and high-school checkpoints. |
| ISAT Fixed Form / Paper Accommodation Accommodation |
Eligible students in tested grades | March 30 – May 1, 2026 | May 4 – May 22, 2026 | Used for students approved for fixed-form paper or related accommodations. Schools manage eligibility and administration. |
| Challenge Up ISAT ELA/Math High School |
Grades 9–10, where appropriate | March 9 – May 1, 2026 | Local school guidance applies | Grade 9 or 10 students may test early only when they have completed high-school content standards and educators determine readiness. |
| SAT School-Day Assessment SAT |
Grade 11 | March 2 – April 30, 2026 | No separate post-window make-up; schools should plan make-up dates inside the window | Grade 11 students should confirm their exact SAT day, digital testing requirements, and school check-in procedures. |
| PSAT/NMSQT PSAT |
Mostly Grade 10; local eligibility may vary | October 1 – October 31, 2025 | School determined | Schools choose specific testing dates inside the October window. Students should ask their counselor for registration details. |
| School Year 2025–2026 Interim ISAT Interim |
Eligible grades | August 18, 2025 – March 6, 2026 | Some grade-level access may continue into spring | Interim assessments help teachers monitor progress before the spring summative ISAT. |
| Summer Interim ISAT Summer |
Eligible grades | June 1 – July 24, 2026 | Not usually a make-up for summative accountability testing | Used for continued practice, instructional planning, and local assessment needs. |
| Idaho Civics Assessment Local Window |
Usually grades 7–12 | LEA determined | LEA determined | Based on civics knowledge expectations. Schools and districts manage timing and completion rules. |
Source basis: Idaho Department of Education assessment windows and ISAT assessment information. Local school testing dates may differ within the official windows.
Idaho High-School Assessment Guide
Idaho high-school students should pay special attention to Grade 11. Grade 11 is the key statewide high-school testing year because students are included in ISAT ELA/Literacy, ISAT Mathematics, ISAT Science, and the SAT school-day window.
| High-School Test | Grade | Window | Preparation Focus |
|---|---|---|---|
| ISAT ELA/Literacy | Grade 11 | March 9 – May 1, 2026 | Reading comprehension, evidence-based writing, grammar, organization, and constructed responses. |
| ISAT Mathematics | Grade 11 | March 9 – May 1, 2026 | Algebra, functions, modeling, statistics, problem solving, and multi-step reasoning. |
| ISAT Science | Grade 11 | March 9 – May 1, 2026 | Scientific reasoning, interpreting data, modeling systems, and explaining evidence. |
| SAT | Grade 11 | March 2 – April 30, 2026 | Reading and writing, math, calculator fluency, pacing, and digital testing readiness. |
| PSAT/NMSQT | Typically Grade 10; sometimes Grade 11 | October 1 – October 31, 2025 | Early SAT readiness, reading/writing foundations, algebra, data analysis, and college-readiness practice. |
Month-by-Month Idaho Testing Timeline
A month-by-month view helps families plan without confusion. Idaho’s assessment schedule covers fall PSAT testing, school-year interim assessments, spring summative ISAT testing, and summer interim access.
August 18, 2025 – March 6, 2026: Interim ISAT Window
Schools may use interim assessments to monitor student progress before the official spring summative window. Interim assessments are instructional tools, not a replacement for the spring statewide test.
October 1 – October 31, 2025: PSAT/NMSQT Window
Idaho schools administer PSAT/NMSQT during the October window. Students should confirm exact testing dates with their counselor or school test coordinator.
March 2 – April 30, 2026: SAT Grade 11 Window
Grade 11 students take the school-day SAT during this window. Schools should plan make-up opportunities inside the same window because families should not rely on testing after the closing date.
March 9 – May 1, 2026: Spring ISAT Summative Window
This is the main testing window for ISAT ELA/Literacy, Math, and Science. ELA and Math apply to grades 3–8 and 11. Science applies to grades 5, 8, and 11.
May 4 – May 22, 2026: ISAT Make-up Window
Students who miss a scheduled test day may complete testing during the make-up window, depending on school and district arrangements.
June 1 – July 24, 2026: Summer Interim Window
Summer interim testing may be used for additional academic planning, practice, or local instructional needs.
Simple ISAT Preparation Planner
Families often ask, “How much should a student practice before testing?” A simple planning formula can help. This is not an official Idaho score formula. It is a study-planning method for organizing practice time.
Practice Time Calculator
Enter a simple plan and estimate total preparation minutes before ISAT week.
How Students Should Prepare for Idaho ISAT
The best preparation is steady, calm, and subject-specific. Students should not wait until the final week. Idaho’s testing window is long, but each school may schedule testing on specific days, so the safest approach is to begin review several weeks early.
ELA / Literacy Preparation
- Read short informational passages and identify the central idea, evidence, author’s purpose, and tone.
- Practice explaining answers with text evidence rather than only choosing an option.
- Review grammar, sentence structure, transitions, and paragraph organization.
- Write short responses that include a clear claim, evidence, and explanation.
Mathematics Preparation
- Review grade-level math standards, especially multi-step problems and real-world modeling.
- Practice showing work clearly, even when using a calculator.
- Review fractions, ratios, proportional relationships, equations, functions, geometry, statistics, and data displays based on grade level.
- Use error review: after every practice session, write down what went wrong and how to fix it next time.
Science Preparation
- Practice reading graphs, tables, diagrams, and experiment descriptions.
- Focus on evidence-based explanations: claim, evidence, and reasoning.
- Review life science, physical science, Earth and space science, and engineering practices based on grade level.
- Do not memorize only definitions; practice applying concepts to unfamiliar situations.
Parent Checklist for Idaho ISAT Week
Parents do not need to turn test week into a high-pressure event. The goal is to help the student arrive rested, prepared, and confident.
- Confirm the exact testing dates with the school because Idaho publishes windows, not one statewide daily schedule.
- Check whether the student needs headphones, a charged device, school login details, or specific materials.
- Make sure the student sleeps well during the testing week.
- Plan breakfast and transportation so the student arrives on time.
- Avoid last-minute cramming. Use short review sessions and calm encouragement.
- Ask the school about make-up testing if the student is absent on a scheduled test day.
How to Use This Idaho ISAT Timetable
Step 1: Identify the student’s grade
Start with the grade level. Grades 3–8 and 11 take ISAT ELA and Math. Grades 5, 8, and 11 take ISAT Science.
Step 2: Match the grade to the correct assessment
Use the table above to identify whether the student needs ELA, Math, Science, SAT, PSAT/NMSQT, or a local civics assessment.
Step 3: Mark the official window
Add the official Idaho window to your calendar. For most ISAT summative testing, the key window is March 9–May 1, 2026.
Step 4: Confirm the school’s exact test date
Contact the school or check the school calendar. Districts and schools schedule specific test days inside the state window.
Step 5: Build a light preparation plan
Use short, steady practice sessions. A useful plan is 20–40 minutes per subject, several days per week.
Frequently Asked Questions
What is the main Idaho ISAT testing window for 2026?
The main spring 2026 ISAT summative assessment window is March 9–May 1, 2026.
When is the Idaho ISAT make-up testing window?
The ISAT make-up window is May 4–May 22, 2026, or according to the final school-day rules applied locally.
Which Idaho grades take ISAT ELA and Math?
ISAT ELA/Literacy and Mathematics are administered to grades 3–8 and grade 11.
Which Idaho grades take ISAT Science?
ISAT Science is administered in grades 5, 8, and 11.
When do Idaho Grade 11 students take the SAT?
Idaho’s Grade 11 SAT school-day assessment window is March 2–April 30, 2026.
Does every Idaho school test on the same exact day?
No. Idaho publishes official testing windows. Each school or district chooses exact testing dates inside those windows.
Is the PSAT/NMSQT part of the Idaho high-school testing schedule?
Yes. The 2025 PSAT/NMSQT window listed for Idaho is October 1–October 31, 2025. Students should confirm local eligibility and the exact test date with their school.
Can Grade 9 or Grade 10 students take high-school ISAT early?
Idaho allows Challenge Up testing in certain cases. A student must have completed relevant high-school content standards, and the school must determine that early testing is appropriate.
Final Takeaway
The most important Idaho testing dates for families are simple: ISAT runs March 9–May 1, 2026, with make-up testing May 4–May 22, 2026. ELA and Math apply to grades 3–8 and 11, Science applies to grades 5, 8, and 11, Grade 11 SAT runs March 2–April 30, 2026, and PSAT/NMSQT runs October 1–October 31, 2025.
Use this page as a planning guide, then confirm the exact school-level schedule with your district or school testing coordinator.
