Washington University’s endowment grew by almost $800 million in the last fiscal year, officials said recently. The endowment totals $5.35 billion as of June 30, the end of the fiscal year. Chancellor Mark S. Wrighton said the increase is due to both the return on the University’s investments and donor gifts.

Undergraduate tuition at Washington University will be $39,400 for the 2010-11 academic year, a 4.2 percent increase over the 2009-2010 tuition of $37,800, the administration announced Thursday.