91探花

2026 Undergraduate Summer Session Calendar

Apply to St. Thomas by November 1 for Early Action and hear back sooner, giving you a head start on your journey to becoming a Tommie.

Summer Session 1

DATE DESCRIPTION CATEGORY

May 27, 2026

Classes begin

Instruction begins

May 29, 2026

Last day to add a class without instructor permission

Registration

June 2, 2026

Last day to drop a class without a "W" appearing on transcript

Registration

June 2, 2026

Last day for 100% tuition refund; see Refund Policies and Schedule

Billing

June 7, 2026

Last day for 75% tuition refund; see Refund Policies and Schedule

Billing

June 9, 2026 Last day for 50% tuition refund; see Refund Policies and Schedule Billing
June 11, 2026 Last day to designate grading option (Pass/Fail) Registration
June 12, 2026 Last day for 25% tuition refund; see Refund Policies and Schedule Billing
June 19, 2026 No classes (Juneteenth) Holiday
June 29, 2026 Last day to withdraw from a class without a grade of F Registration
July 3, 2026 No classes (Independence Day observed) Holiday
July 9, 2026 Classes end Academics
July 17, 2026 Final grades due to Registrar Academics

Extended Session

DATE DESCRIPTION CATEGORY
May 27, 2026 Classes begin Instruction begins
June 2, 2026 Last day to add a class without instructor permission Registration
June 3, 2026 Last day to drop a class without a "W" appearing on transcript Registration
June 8, 2026 Last day for 100% tuition refund; see Refund Policies and Schedule Billing
June 13, 2026 Last day for 75% tuition refund; see Refund Policies and Schedule Billing
June 15, 2026 Last day for 50% tuition refund; see Refund Policies and Schedule Billing
June 17, 2026 Last day to designate grading option (Pass/Fail) Registration
June 19, 2026 No classes (Juneteenth) Holiday
June 20, 2026 Last day for 25% tuition refund; see Refund Policies and Schedule Billing
July 3, 2026 No classes (Independence Day observed) Holiday
July 9, 2026 Last day to withdraw from a class without a grade of F Registration
July 23, 2026 Classes end Academics
July 31, 2026 Final grades due to Registrar Academics

Double Session

DATE DESCRIPTION CATEGORY
May 27, 2026 Classes begin Instruction begins
June 2, 2026 Last day to add a class without instructor permission Registration
June 9, 2026 Last day for 100% tuition refund; see Refund Policies and Schedule Billing
June 9, 2026 Last day to drop a class without a "W" appearing on transcript Registration
June 16, 2026 Last day for 75% tuition refund; see Refund Policies and Schedule Billing
June 19, 2026 No classes (Juneteenth) Holiday
June 23, 2026 Last day for 50% tuition refund; see Refund Policies and Schedule Billing
June 30, 2026 Last day to designate grading option (Pass/Fail) Registration
June 30, 2026 Last day for 25% tuition refund; see Refund Policies and Schedule Billing
July 3, 2026 No classes (Independence Day observed) Holiday
July 30, 2026 Last day to withdraw from a class without a grade of F Registration
August 20, 2026 Classes end Academics
August 28, 2026 Final grades due to Registrar Academics

Summer Session 2

DATE DESCRIPTION CATEGORY
July 13, 2026 Classes begin Instruction begins
July 15, 2026 Last day to add a class without instructor permission Registration
July 17, 2026 Last day for 100% tuition refund; see Refund Policies and Schedule Billing
July 17, 2026 Last day to drop a class without a "W" appearing on transcript Registration
July 21, 2026 Last day for 75% tuition refund; see Refund Policies and Schedule Billing
July 23, 2026 Last day for 50% tuition refund; see Refund Policies and Schedule Billing
July 28, 2026 Last day to designate grading option (Pass/Fail) Registration
July 28, 2026 Last day for 25% tuition refund; see Refund Policies and Schedule Billing
August 11, 2026 Last day to withdraw from a class without a grade of F Registration
August 20, 2026 Classes end Academics
August 28, 2026 Final grades due to Registrar Academics