Texas State Immunization Rules | PowerSchool SIS Compliance

Overview

This page explains how the Texas State Immunization Rules Engine evaluates student immunization compliance in PowerSchool Health, including grade-level requirements, birthday milestone rules, exemptions, disease history, and cross-vaccine catch-up logic.

Texas Minimum State Vaccine Requirements

The Texas State Immunization Rules Engine evaluates compliance using the Texas Department of State Health Services minimum vaccine requirements for Child-Care/Pre-K and Grades K–12. Evaluation considers the student’s grade level, age at administration, dose dates, four-day grace-period rules around birthday milestones, exemptions, confirmed disease history, and qualifying combinations across related vaccine records.

Vaccine series	Applicable grades or ages	Required doses	Key compliance criteria
DTaP / DTP / DT	Kindergarten–Grade 6	5 doses, or 4 doses under the milestone rule	Four doses may satisfy the requirement when dose 4 is administered on or after the fourth birthday, including the four-day grace period. Students age 7 or older may qualify through the DTaP/Tdap/Td catch-up combination rules.
Tdap / Td	Grades 7–12	1 booster dose	One Tdap booster is generally required upon entry to Grade 7 when the required interval has elapsed since the last tetanus-containing dose. Td may be used for subsequent booster requirements according to the applicable schedule.
Polio (IPV / OPV)	Kindergarten–Grade 12	4 doses, or 3 doses under the milestone rule	Three doses may satisfy the requirement when dose 3 is administered on or after the fourth birthday. The engine validates dose counts and birthday milestones.
MMR	Kindergarten–Grade 12	2 doses	Dose 1 must be administered on or after the first birthday, including the four-day grace period. Qualifying pre-2009 single-antigen histories may satisfy the legacy combination rule.
Hepatitis B	Kindergarten–Grade 12	3 doses, or an approved 2-dose adolescent formulation schedule	The engine evaluates the standard three-dose series and qualifying two-dose adult-formulation schedules for students ages 11–15.
Varicella	Kindergarten–Grade 12	2 doses	Dose 1 must be administered on or after the first birthday, including the four-day grace period. Verified disease history may satisfy the requirement.
Hepatitis A	Kindergarten–Grade 12	2 doses	Dose 1 must be administered on or after the first birthday, including the four-day grace period. Verified disease history or qualifying serology may satisfy the requirement.
Meningococcal (MCV4 / MenACWY)	Grades 7–12	1 dose	One quadrivalent meningococcal conjugate vaccine dose is required on or after the eleventh birthday.

Birthday Milestones and Grace-Period Evaluation

Several Texas rules depend on the student’s age when a dose was administered. The engine applies a four-day grace period when evaluating milestone dates.

First-birthday rules: Used for the first dose of MMR, Varicella, and Hepatitis A.
Fourth-birthday rules: Used for reduced-dose DTaP and Polio pathways.
Four-day grace period: A dose administered up to four days before the applicable birthday may qualify when the rule permits it.
Exact administration dates: Dose dates must be entered accurately because the engine evaluates the date against the student’s date of birth and grade-level rule.

Multi-Line Cross-Vaccine Evaluation

For students age 7 or older in Grades K–6 who have mixed tetanus, diphtheria, and pertussis records, the rules engine evaluates qualifying doses across DTaP, Tdap, and Td records. This allows the system to recognize catch-up histories that do not appear as a complete series under a single vaccine type.

Primary record

DTaP: One dose received before age 4.

Secondary record

Tdap: One dose received on or after age 4, including the permitted four-day grace period.

Tertiary record

Td: One or more qualifying doses recorded.

Result: When the required conditions are satisfied across the related records, the student may be marked DTaP compliant under the Grade K–6, age 7+ catch-up rule. The resulting statement may identify the combination as complete with two or more Tdap/Td doses.

Evaluation sequence

Primary vaccine level: The engine evaluates the DTaP record, including dose count and age conditions.
Secondary vaccine level: The engine evaluates the Tdap record and its milestone condition.
Tertiary vaccine level: The engine evaluates the Td record for the required minimum dose count.
Combined result: If all conditions are met, the related records are evaluated together as a compliant catch-up pathway.

Exemptions and Confirmed Disease History

Approved exemptions and verified disease histories may satisfy a vaccine requirement when the associated documentation is complete and valid.

Code	Category	Validity	Documentation or usage
MED	Medical exemption	One year or lifelong	Requires a signed physician statement confirming that immunization is medically contraindicated. The exemption may be lifelong when the condition is permanent.
CON	Reasons of conscience	Two years	Requires the official notarized Texas DSHS affidavit for exemption from immunizations for reasons of conscience. Renewal must be tracked.
SER	Serology or titer	Permanent	Requires laboratory evidence of immunity for an applicable vaccine-preventable disease, such as MMR, Hepatitis B, Hepatitis A, or Varicella.
MAC	Medically acceptable	Custom	Used when a schedule differs from standard intervals but has been reviewed and accepted by an authorized healthcare provider.

Confirmed history of disease

Supported disease histories include Varicella, Measles, Mumps, Rubella, Hepatitis A, and Hepatitis B. Entering a verified disease date in the Confirmed History of Disease field can satisfy the related vaccine series without requiring vaccine dose entries.

Recordkeeping reminder: Exemption and disease-history entries should be supported by the documentation required by the applicable Texas rule and local district procedures. An expired exemption does not continue to satisfy compliance.

Workflow

1. Open the student immunization record

Select the student in PowerSchool SIS.
Navigate to Health > Immunizations.
Review the vaccine series and current compliance statuses.

2. Enter vaccine doses

Locate the appropriate vaccine row, such as DTaP, Polio, MMR, or Varicella.
Enter each administration date in MM/DD/YYYY format.
Select Save.
Review the recalculated status and rule statement.

3. Record exemptions or disease history

Select the applicable exemption code when an approved exemption exists.
Enter the expiration date when the exemption is time-limited.
Enter a verified disease date in Confirmed History of Disease when disease history is being used.
Select Save.

4. Review the result

Green / Compliant: The student satisfies the applicable dose, milestone, combination, exemption, or disease-history rule.
Red or amber / Action required: The student is missing a dose, has an invalid milestone date, has an expired exemption, or does not meet a qualifying combination.
Rule statement: Read the displayed statement to confirm which rule was applied. An example is Dtap compliant: grade K to 6 age 7 years+ {Combination complete with 2+ Tdap/Td}.