Being in my position gives me a lot of opportunities to present and attend awesome workshops and conferences. My latest excursion was to the EdTechTeacher Google Jamboree in Cambridge a few weeks ago. It was an incredibly inspiring day! If you aren't familiar with EdTechTeacher, they are based in Boston and put together really awesome trainings and resources for using technology in education. I recently came across their workshop listing for this summer and wanted to be sure to pass it along. Many of them fall into the next fiscal year, so I would think it would be possible to get it on the books now if you want to attend any of them. Although they offer sessions across the US, there are a ton right in Boston. Be sure to check them out if you are interested in furthering your tech skills for your classroom and don't feel like you have time from September to June.
I had a teacher ask me if there was a way to hide or remove students who are no longer in your class. The answer is maybe. It depends on if they are officially dropped from your class and appearing as red in your roster and gradebook. If not, then no, you cannot remove them until they have been unenrolled from the class. If the student is showing up as red in your gradebook though, you can hide them so you don't have to worry about them. Here is a screenshot to help you do it: