SAN MATEO — Voters Tuesday returned three incumbents to the San Mateo Union High School District board.

Trustees Peter Hanley, Linda Lees Dwyer and Robert Griffin staved off challengers Mike Loy and Guadalupe Ortiz.

With all 163 precincts reporting, Hanley garnered 25 percent of the votes, followed by Lees Dwyer with 23 percent and Griffin with 21 percent. Loy had 18 percent while Ortiz received 13 percent.

"I'm very pleased that the voters gave me the privilege to continue to serve on the district board," said Hanley, adding that the district has "too many students performing at a low level," a problem he has pledged to tackle.

By far, Hanley led all candidates in campaign fundraising, drawing in more than $30,000. He acknowledged that the well-funded effort gave him an advantage in getting his message out to as many voters as possible.

"I knew I was in a very competitive race," said Hanley, who serves as board president. "I didn't take anything or any vote for granted."

Neil Gonzales covers education. Reach him at 650-348-4338.