Ms. Lu's school in Shenyang, Northeast Yucai, mirrors a well-funded college campus in the U.S., with a large square in between its many buildings.

WSJ: Parents of China Victim Get U.S. Visas

Teachers say many of Ms. Lu's classmates are overseas, as 100 of the 500-600 students who graduate from Yucai each year go abroad for college.

WSJ: Parents of China Victim Get U.S. Visas

"This was and will be their only child, " said a teacher who gave her surname as Gao at the Northeast Yucai School where Ms. Lu once studied.

WSJ: Parents of China Victim Get U.S. Visas