The folks at Springpad were unable to secure more permanent funding and have closed their doors. As of June 25th, all data will be unavailable, apps will stop working, and the website will be shutdown. Any students with Springpad accounts have two options for backing up data. Please visit your Springpad accounts to learn more.
For more information on the shutdown itself, here is a FAQ from the folks at Springpad:
A replacement for scale and rudiment assessments, as well as marking period assessments will be in place for next fall. In the interim, back up your current data, feel free to investigate Evernote, and we will have something in the works by time school rolls around in September.
Mr. Du Beau