Possible issue with Summer 2011 data

[tuohybuoy]

I noticed that Summer 2011 has 2762 records, but Summer 2010 has 193 and 2012 has 177.

Certain course subjects are more affected than others. ACCY, BADM, ECON, MATH, MCB and PSYC have many more records than I'd expect based on the surrounding years.

I checked ECON 102, and the records may be from a different term. The dataset has multiple entries per instructor for SU11, and the dataset shows many instructors not listed in the SU11 class schedule for that course.