Christine Song posted a two-under 70 on Friday to extend her lead after the third round of the LPGA Final Qualifying Tournament.
Song finished 54 holes at 10-under 206 and is five strokes clear.
LPGA Q School is played over five rounds and two courses. For the first four rounds, golf rotates over the Champions Course and Legends Course at LPGA International.
There will be a cut after 72 holes for the low 70 and ties. The final round will take place at the Champions Course, then it gets really interesting.
The low 40 and ties receive LPGA Tour membership for 2012. For the remaining players who make the cut, they will earn some type of status on the Futures Tour.
Song played the Champions Course on Friday.
Jennie Lee fired a three-under 69 and is alone in second at minus-five.
Amateur Stephanie Kono (75) and Jacqui Concolino (71) share third place at three-under 213.
With the top four at the Champions Course Friday, Junthima Gulyanamitta snuck up the leaderboard with a two-under 70 at the Legends Course. She is alone in fifth place at two-under 214.
Song, who has led after both of the first two rounds, started poorly on Friday. She parred the first, but bogeyed both the second and third holes to fall back to six-under par for the championship.
Song atoned for the early errors in a big way. She rattled off four consecutive birdies from the fourth hole to turn a two-over par round into a two-under one.
After three pars around the turn, Song bogeyed the 11th. She got that stroke back with a birdie at the par-five 13th. Song parred her last five, although most were a struggle, to earn a comfortable lead with two rounds to go.
"I was scrambling so much today," said Song, 20. "My shots weren't very good and my chipping and putting were so-so, but I got it done."
Paolo Moreno (72), Dori Carter (71) and Thidapa Suwannapura (68) share sixth place at even-par 216.
NOTES: Lee and Suwannapura posted two of just five sub-70 rounds in the huge field on Friday...Reigning U.S. Amateur champion Danielle Kang had another of those sub-70 rounds, a 69 at the Champions Course, and vaulted into a tie for 22nd at plus-three...Former U.S. Women's Open champion Birdie Kim had a one- over 73 in round three and is tied for 62nd at nine-over par.