| Summer 13 registration begins all sessions | Monday, March 18 |
| Registration office hours: Mon.-Wed. 8:30AM - 6:00PM | Wednesday, May 15 - May 22 |
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| First Day of Session 1 (5/20-6/28) | Monday, May 20 |
| Last day to submit registration for Summer Session 1 on the UMassULearn website | Thursday, May 23 |
| Session 1 Add/Drop ends | Friday, May 24 |
| Session 1 last day for refunds (100% less registration fee) | Friday, May 24 |
| Last day for registration for Session 1 on SPIRE or by fax, walk-in, mail to be received | Friday, May 24 |
| Memorial Day - Offices closed - No classes | Monday, May 27 |
| Session 1 Last day to Withdraw or select ‘P/F’ | Friday, June 7 |
| Session 1 Classes End | Friday, June 28 |
| Official Summer grades show on transcripts in SPIRE | Friday, August 23 |
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| First Day of Non-standard date Isenberg classes | Monday, May 20 - Aug. 20 |
| Memorial Day - Offices closed - No classes | Monday, May 27 |
| Non-standard date Isenberg classes Add/Drop ends | Wednesday, May 29 |
| Non-standard date Isenberg classes last day for refunds (100% less registration fee) | Wednesday, May 29 |
| Non-standard date Isenberg classes Last day to Withdraw or select ‘P/F’ | Friday, June 28 |
| Independence Day - Offices closed - No classes | Thursday, July 4 |
| Last Day of Non-standard date Isenberg courses | Friday, August 16 |
| Official Summer grades show on transcripts in SPIRE | Friday, August 23 |
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| First day of Session 2 classes | Monday, July 8 - August 16 |
| Last day to submit registration for Summer Session 2 on the UMassULearn website | Thursday, July 11 |
| Session 2 Add/Drop ends | Friday, July 12 |
| Session 2 last day for refunds (100% less registration fee) | Friday, July 12 |
| Last day for registrations for Session 2 on SPIRE or by fax, walk-in, mail to be received | Friday, July 12 |
| Session 2 Last day to Withdraw or select ‘P/F’ | Friday, July 26 |
| Last Day of Summer Classes | Friday, August 16 |
| Official Summer grades show on transcripts in SPIRE | Friday, August 23 |