What should a teacher do when a field trip is rescheduled and slips are already signed?
The venue cancelled and every form in your folder names the old date. Here is how to tell whether those signatures still count, and how to re-collect quickly when they do not.

Start with what the signed form actually says
Before you send anything, read your own form. Most slips name a date, a destination, and a departure and return time, and a parent signed consent for that specific thing. If the date has changed, the honest reading is that the signature covers an event which is no longer happening. Some districts treat a same-destination, same-activity change of date as covered by the original consent, others require a new signature for any change to the printed details. Ask your administrator rather than deciding alone, because this is exactly the question that gets asked later if anything goes wrong. Related: How can teachers collect field trip permission slips without chasing paper all week?
The distinction that usually matters is whether anything material changed besides the calendar. Same museum, same buses, same chaperone ratio, moved by a week: many schools accept a written notice to families with an easy way to withdraw. A different venue, a longer day, a new activity with its own risk profile like swimming or a climbing wall, or a date that now lands in a holiday week: that is a new trip wearing the old trip's name, and it deserves a new signature.
Keep reading: How can teachers collect field trip permission slips without chasing paper all week?, Are typed parent e-signatures valid enough for a school field trip permission form?, What is the fastest way to get every parent to return a permission slip on time?. See how SlipSignr helps you school permission slip signing and collection.
Write the form so a date change does not void it
You can prevent most of this the next time you build a slip. Wording along the lines of consent covering the trip described above, including a rescheduled date within the same school term, provided the destination and activities are unchanged, turns a cancellation into a notification instead of a full re-collection. Pair it with a promise that families will be told the new date in writing and can withdraw their child without penalty. Have your district read the clause once, then reuse it, since consent language is one of the few parts of a slip worth reviewing properly and then leaving alone. Related: What is the fastest way to get every parent to return a permission slip on time?
The same idea covers weather. If you are booking anything outdoors in late fall or early spring, assume a rain date exists and print it on the form from the start. Parents sign once for the main date and the backup date, and you never have the conversation twice. It costs you nothing extra in practice, because the second date usually has to be held with the venue and the bus company anyway.
The re-consent message that actually gets answers
When you do need fresh signatures, keep the message short and specific. Lead with what changed and what it means: the trip moved from this date to that date, everything else is the same, we need your signature again by Friday. A long explanation of why the venue cancelled makes parents skim, and skimming is how a deadline gets missed. Send it on the channel that worked the first time, which for a lot of families is a text rather than an email, and send one clear request rather than three reminders in an afternoon. Related: Are typed parent e-signatures valid enough for a school field trip permission form?
Expect a slice of the class to have a genuine conflict with the new date, and ask about it in the same message instead of in a follow-up. One line saying to reply if the child cannot attend on the new date saves you from discovering the problem on the morning of the trip. Track the responses exactly as you tracked the originals, and treat any parent who signed for the old date but has not answered for the new one as not yet consented, no matter how enthusiastic they were the first time around.
What else changes when the date changes
A reschedule quietly breaks things that had nothing to do with the signature. Chaperones who took a day off work for the original date may not be free for the new one, and if that drops you under your required ratio you have a staffing problem before you have a consent problem. Confirm the adult list before you confirm the student list. Fees deserve the same attention: if a family already paid and can no longer attend, decide the refund rule first and state it in the same message rather than answering the question fifteen separate times. Related: How do you send digital permission slips to families who do not use email regularly?
Then reconcile everything else against the new date. Medication authorizations and allergy notes may carry a validity window or may simply be stale. Custody schedules move with the calendar, so the parent who signs and the parent doing pickup may not be the same pair they were for the original date. Rosters shift as students transfer in and out. Print or export a fresh list on the morning of the new trip instead of reusing the one in your folder, because that one is now a snapshot of a day that never happened.
- Read the signed form first: a slip naming one specific date does not automatically cover a different one.
- A material change to venue, activity or length means new signatures, not just a friendly notice.
- Add a rescheduled-date clause and a printed rain date so a postponement becomes a notification.
- Re-verify chaperones, fees, medical notes and the roster against the new date, not only the consent.
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