First batch of midterms - very good.

Second batch of midterms - so bad they make me want to quit my job.

Third batch - to be dealt with whilst drinking cocoa at Starbucks in the morning.

So, if I ask for you to quote a value for the mass marking the difference between high mass stars and low mass stars, wouldn't you give me just one value? I had several students quote a range. Sometimes I feel more like I'm testing their language skills as opposed to their astronomy knowledge. Sigh.