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MTSS Platform

Data updated last night at 2:00 AM

MTSS Rules

The rules every screen uses. Current: Rule Set v3, saved Apr 24, 2026 by Dr. Renee Whitfield.

Tier placement

Where the imported percentile puts a student: Tier 1, 2 or 3. Drag the two handles on each ruler.

Percentile cut points

Configurable
Grades K-2

Tier 1 25th and above

Tier 2 10th to below 25th

Tier 3 below 10th

Grades 3-5

Tier 1 25th and above

Tier 2 10th to below 25th

Tier 3 below 10th

Grades 6-8

Tier 1 25th and above

Tier 2 10th to below 25th

Tier 3 below 10th

Grades 9-12

Tier 1 25th and above

Tier 2 10th to below 25th

Tier 3 below 10th

Students below the 25th percentile in Reading (grades 3-5) will be placed in Tier 2; below the 10th, Tier 3.

Progress monitoring

How often students are checked, and when the four-point rule speaks up.

Check frequency

Configurable
days

From 7 to 28

days

From 3 to 14

Tier 2 students are measured every 14 days; Tier 3 every 7 days.

Four-point rule

Configurable

From 3 to 12

From 1 to 10

pts

From 3 to 6

After at least 6 data points and 3 weeks, the last 4 points are compared with the aim line: all below suggests adjusting; all above suggests raising the goal; mixed means continue.

Intervention groups

How big a group can be and how long before a plan is looked at again.

Group size limits

Configurable
students

From 2 to 8

students

From 1 to 5

Tier 2 groups have up to 5 students; Tier 3 groups up to 3.

Review cycle

Configurable
weeks

From 4 to 18

weeks

From 4 to 18

Tier 2 plans are reviewed every 9 weeks; Tier 3 plans every 9 weeks.

Delivery quality

Whether sessions are actually happening, and happening as planned.

Dosage alert

Configurable
80%
50%100%

A plan is flagged when fewer than 80% of scheduled sessions were held.

Fidelity support

Configurable
Suggest support when the average rating is below (out of 3)

Delivery support is suggested for an interventionist whose average “delivered as planned” rating is below 2 of 3.

Class level

When a whole class, not individual students, is the thing to look at.

Class-wide concern

Configurable
60%
30%90%

A class is flagged when more than 60% of its students are below the Tier 2 line.

Change log

Rule change log
SummaryFrom → to
v3Apr 24, 2026Marcus BellSet Tier 3 group size limit4 students 3 students
v2Sep 30, 2025Dr. Renee WhitfieldAdded class-wide concern flagNot set Flag a class when more than 60% are below the Tier 2 line
v1Apr 22, 2025Dr. Renee WhitfieldInitial rule set— Tier 2 below 25th, Tier 3 below 10th percentile