What MAST Is: a Test Spread Across the Whole Year
Montana replaced its one big spring exam in grades 3 through 8 with something genuinely different. The current test is the Montana Aligned to Standards Through-Year assessment, or MAST, and instead of a single sitting it spreads short pieces called testlets across the entire school year. Over the year a student takes twelve math testlets, six ELA reading testlets, one ELA writing performance task, and one anchor testlet, and the results combine into a summative score and achievement level for the state. The Office of Public Instruction administers it, New Meridian designs the content, and the tests are delivered online through the Kite platform. The plainest way to picture it: your child’s state testing now looks more like several short check-ins tied to classroom learning than one long exam in April.
MAST became the operational test statewide fairly recently, after a pilot and a large field test, and it replaced Smarter Balanced in these grades. Most testlets are meant to take about 15 to 30 minutes, and the writing performance task runs a little longer, so no single day dominates the way an old-style spring test did.
What MAST Looks Like: Format and Item Types
On test day, MAST is online, and paper forms are available for students with an IEP or 504 accommodation. Accommodated forms include Braille, Spanish online and paper versions, and American Sign Language support through embedded videos. Because the testlets are spread across the year, one practical rule matters: a testlet must be finished within its scheduled window and cannot be moved to a later window, though a student can usually receive reasonable extra time and should complete a testlet the same day they start it. The design intends math testlets to line up with what the class is currently studying, so the experience should feel connected to instruction rather than dropped in from nowhere.
Why You Cannot Compare MAST Scores to the Old Test
If you saved your child’s old Smarter Balanced results, set them aside. The Office of Public Instruction has been direct that MAST results cannot be compared to prior years, because the testing model itself changed. This is the single most common source of parent alarm, so it helps to know it going in: a higher or lower number this time does not mean your child moved up or down relative to the old test. The ruler changed. When the first MAST results came out, state leaders specifically cautioned that they should be read carefully for that reason, and the same caution holds every time you look at a report. You are reading the start of a new trend line, not a continuation of the old one.
The Grade-by-Grade Testing Map
Grades 3 through 8 carry the core load with MAST in English language arts and math. Grades 5 and 8 add the Montana Science Assessment, a separate science test given in the spring. High school works differently: grade 11 students take the ACT with Writing, which covers English, math, reading, science, and writing, and it doubles as Montana’s college-entrance and statewide accountability test for that grade.
Two groups follow different paths. Students with the most significant cognitive disabilities take the Dynamic Learning Maps alternate assessments in ELA, math, and science, which is an IEP-team decision based on eligibility criteria. English learners take WIDA ACCESS each year for language proficiency, and it does not replace the content tests.
What the Four Achievement Levels Mean
MAST reports four achievement levels: Novice, Partially Proficient, Proficient, and Advanced. Novice means the student did not meet grade-level expectations, Partially Proficient means they partially met them, Proficient means they met them, and Advanced means they exceeded them. Proficient is the mark to look for as on grade level. The Montana Science Assessment uses a slightly different set of labels, Novice, Nearing Proficiency, Proficient, and Advanced, so do not be thrown by the wording difference between the science report and the ELA and math report.
Behind the levels is a scale score. Currently, MAST reports ELA and math on a 250 to 400 scale across grades 3 through 8, with the same Novice and Partially Proficient ranges across grades and grade-specific cut points above that. When you read the report, treat the level as the headline and the testlet performance bands underneath as the useful detail, since those help you see which skills are strong and which need work.
For most families, these levels carry no direct personal stakes for the child. The state frames MAST, the science test, and the ACT as tools for achievement reporting, accountability, and instruction, and no Montana source indicates that these state scores directly determine grade promotion or retention. Promotion and retention decisions are made locally, so if you have a specific worry, the right place to check is your own district’s policy rather than the state test.
Opt-Out and Refusal in Montana
Montana’s position here is unusually explicit, which actually makes it easier to plan around. The state does not have a parent opt-out law, and state law requires students in public and accredited nonpublic schools to participate. Parents may still refuse under federal parent-notice provisions, but refusal is not consequence-free for the school: the state treats the student as a nonparticipant for accountability and counts the refusal against the school’s participation rate. Within Montana’s accountability procedures, a medical emergency is the only recognized nonparticipation reason.
There is also a scoring detail worth knowing. For accountability calculations, a student who is required to test but does not test is assigned a Novice score and marked as a nonparticipant. That is an accountability rule, so if refusal is on your mind, ask the school how it appears, and read your district’s assessment policy rather than relying on a general claim that Montana parents can freely opt out.