Sentence:  <WSD>Tiger mothers</WSD> and $125-an-hour tutors proliferate, and parents scrimp and struggle to pay up to $40,000 a year in tuition to private secondary schools that then put them on the spot for supplemental donations, lest the soccer field turn brown and the Latin club languish. 
Meaning of the word marked with <WSD> tags:  A mother who drives her child/children very hard to succeed in school or in extracurricular studies like learning a musical instrument. (from 21st c.)