Is this the summer vacation exchange? If it is, then participants had a month to shop and get their packages out. Looks like packages were expected to be received by May 15th.
"The idea is to send items to your exchange pal that will help them get ready for their upcoming summer vacation For example, if your buddy is going to the beach, you might include a bottle of sun block. If your buddy has photography as a hobby, you might send them a photo album to put their pictures in. Anyway, you get the idea. The spending limit is $25.00 not including shipping.
I will collect names until April 8th. I will randomly select your buddy and will send you your pal's name and corresponding information no later than April 11th. You will have until May 11th to shop for your pal and to get there packages out. Packages should be received no later than May 15th. "