The Henry Lawson High School (THLHS) is located in Grenfell, a country town in the mid-west of New South Wales, Australia. It teaches approximately 240 students from year 7 through to year 12.
The school was named after Henry Lawson, the famous Australian bush poet. The school's mission statement is: "Challenge, Encourage, Achieve"
The school has been successful in the Young Achievement Australia awards in 1998 and 1999.
The high school was founded on 3 February 1965 after the Grenfell Intermediate School separated into Grenfell Public School and THLHS. The principal of the school is Margaret Carey, and deputy is Stewart Vidler.
The school has a reputable school band and choir, taught by Tony and Mary Holz. They have both been successful in nearby eisteddfods and have won almost every single time, whilst competing against much larger schools. The school's debating and rugby union teams have both made it into state finals.