So LECOM has almost 400 matriculants/year?! I couldn't imagine how that might be. My class only has around 180. Nothing personal for any LECOMers out there, you have no control over the schools matriculation numbers, but that sounds like a "degree mill" strategy(Devry, University of Phoenix, etc) with so many students/class. Also, am I reading this chart right? It seems that most schools have anywhere between 80-90% graduation rate. This calculation assuming that what ever graduation number is posted that year is for the matriculating class 4 years previous. It doesn't make sense that the matriculation numbers and the grad numbers for one year are for the same class. If that was the case then LECOM had a 66% grad rate for 2011-2012, which doesn't sound right at all. Is that normal for any medschool (allo/osteo)?
LECOM has ~380 students between 4 pathways spread across 2 campuses. LECOM-E LDP (150), LECOM-E PBL (~100), LECOM-E DSP (~20), and LECOM-SH PBL in Greensburg, PA (~110).
LECOM-SH is in a completely different city (for pre-clinicals), but is considered a satellite campus, so its numbers were included simply under LECOM (although the link in the OP has them clearly separated, so I'm not sure how you got confused). Most of LECOM-E PBL takes place in a completely separate building in Erie (Bayfront) away from the main campus. LECOM-E DSP is essentially independant study with regular meetings and those students can go to lectures with LDP people of they want.
This is not "diploma-mill" numbers. At best its 270 people at LECOM-E (split into 3 different separate programs) and 110 at LECOM-SH. For comparison NYCOM has ~330 people at one campus, AZCOM has ~270 now at their campus, PCOM has ~280, LMU has ~260, etc.
Also, you seem to missing the fact that LECOM-SH started in 2009 and had its first graduating class in 2013. That means that while ~360 people started in 2009 at LECOM-E and LECOM-SH, only ~260 people graduated each year in 2010, 2011, 2012, until SH graduated its first class in 2013. Attrition for DO schools averages ~8%, and LECOM has an attrition rate of roughly that.
EDIT: The attrition rate was bothering me, so I looked at the old data. First year enrollment for 2010 at LECOM (Erie & Seton Hill) was 390 (it was higher than normal that year). 366 people graduated in 2014 from LECOM-E and LECOM-SH. (366/390)*100% = ~93.8% and net attrition of ~6.2%. Keep in mind this is net attrition, so attrition across one class is obviously a bit greater than this, but generally speaking graduation rate tends to be around this.