Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of Capella Education Company (NASDAQ:CPLA) were getting held back today, falling as much as 11% after it posted its fourth-quarter earnings report.

So what: The for-profit educator actually beat earnings estimates, delivering a profit of $0.79, up from $0.68 a year ago and better than expectations of $0.77, while revenue ticked down 0.9% to $106 million, slightly below the consensus $106.4 million. Those numbers were decent, but what seemed to shake investor confidence was new enrollment falling 6.8% in the quarter. New students are considered the lifeblood of the industry, and a forward indicator of future performance. If new students are declining, sales and profits will eventually follow. Overall student enrollment dropped 2.5%.

Now what: Times have been tough for the for-profit education industry as the Obama administration has cracked down on operators, at times threatening to remove accreditations, and students seem have grown weary of taking on excessive debt. Still, in the current quarter Capella expects new enrollment to recover to "slightly positive" as CFO Steve Polacek said that "performance trends stabilized in 2013." Given that moderation and the improving cost equation, I'd say today's drop looks mostly valuation-based. I'm not a big fan of the education sector, but Capella looks relatively stable for a volatile industry.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.