ISA Explorer

Drop in 2024, 2025 and 2026 together and ISA Explorer matches the students by ID, not by class — because a class code carries no identity from one year to the next, and 401 does not become 501. Look a student up and you get every exam they have taken, in order, with the grade they were in at the time and the class they sit in today. A repeated or skipped grade shows as it actually happened.

Pick a year, a subject and a set of grades, and every student is shown beside their own result from the year before: level up, level down, or a change in proficiency rating. Subscores are kept as a percentage of their own maximum, because those maxima differ per grade and per year and the raw points are not comparable. Filter by IEP and ELL — Any, Yes or No on each — read from the workbook's own columns.

The ISA's third class column is next September's placement, so an arriving roster needs no extra file: ask for class 601 and you get the children who will be in it, each with their most recent scores. Ask for a class that has already happened and you get the students who were in it, with the results from the exam given that spring. Save every class at once and each teacher can be handed theirs. Students placed at another school are listed separately rather than cluttering your class list.

You can name the teacher for each class in each year and see how the students a teacher worked with did over time — and every figure arrives beside the same figure for that grade and for the school, with the cohort's entering proficiency stated and the number of students always shown. Under ten students it says outright that the percentages mean little. This is for instructional conversations. NYC's 2012 Teacher Data Reports are the reason it is shaped this way.

ISA Explorer opens in a browser and has no account, no server behind it, and no code in it that can reach the network — a test on every release fails if any appears. Student data stays on the computer: the workbooks you open, and the master file it writes, are files you keep. Check it yourself — unplug the network and it works exactly the same.