Hi,
If I took that correctly, you’re a teacher correct? If so, if that is a work computer given to you by the school have your IT Department fix it.
If that computer is a home computer for personal use and you were looking for stuff at home: Follow this guide and attach the following logs. MBAM (MalwareByte)/OTL/aswMBR
Note: aswMBR is for Windows 7 only
Guide: http://forum.avast.com/index.php?topic=53253.0
Once this has been completed, and is considered a home computer, I can notify an expert to remove any malware/PUP/Viruses on your system.