Investors interested in Schools stocks are likely familiar with K12 (LRN Quick QuoteLRN - Free Report) and Bright Horizons Family Solutions (BFAM Quick QuoteBFAM - Free Report) . But which of these two stocks is more attractive to value investors? We'll need to take a closer look to find out.

Everyone has their own methods for finding great value opportunities, but our model includes pairing an impressive grade in the Value category of our Style Scores system with a strong Zacks Rank. The Zacks Rank favors stocks with strong earnings estimate revision trends, and our Style Scores highlight companies with specific traits.

Right now, K12 is sporting a Zacks Rank of #2 (Buy), while Bright Horizons Family Solutions has a Zacks Rank of #3 (Hold). This system places an emphasis on companies that have seen positive earnings estimate revisions, so investors should feel comfortable knowing that LRN is likely seeing its earnings outlook improve to a greater extent. However, value investors will care about much more than just this.

Value investors also tend to look at a number of traditional, tried-and-true figures to help them find stocks that they believe are undervalued at their current share price levels.

The Value category of the Style Scores system identifies undervalued companies by looking at a number of key metrics. These include the long-favored P/E ratio, P/S ratio, earnings yield, cash flow per share, and a variety of other fundamentals that help us determine a company's fair value.

LRN currently has a forward P/E ratio of 14.83, while BFAM has a forward P/E of 35.04. We also note that LRN has a PEG ratio of 0.74. This figure is similar to the commonly-used P/E ratio, with the PEG ratio also factoring in a company's expected earnings growth rate. BFAM currently has a PEG ratio of 3.63.

Another notable valuation metric for LRN is its P/B ratio of 2.66. The P/B ratio pits a stock's market value against its book value, which is defined as total assets minus total liabilities. For comparison, BFAM has a P/B of 4.75.

These are just a few of the metrics contributing to LRN's Value grade of B and BFAM's Value grade of D.

LRN stands above BFAM thanks to its solid earnings outlook, and based on these valuation figures, we also feel that LRN is the superior value option right now.