Explaining a layoff without sounding bitter - any advice?

I have an interview next week and I am unsure how to explain why I left my last job as a teaching assistant. I do not want to blame the company. Do you mention numbers?

I keep it to two sentences: the company cut my team, and here is what I am proud of and what I am looking for next.

Thanks for writing this out. I went through something close to it last year, and it settled down once I kept a simple log of every call and form.