Students were required to donate a pair of new socks to support Vinnies to help homeless youth as well as walk or run around Star Swamp in North Beach.
Joining the students were Perth Glory players and X Factor contestant Sydnee Carter who also showed their support for the cause.
St Vincent de Paul Society project manager Niall Rhatigan said he was grateful for the support of the schools.
‘Vinnies helps many young people who are doing it tough,’ he said.
‘The first thing you look at is their feet and this can often tell us the story.’
The Step Up Swampathon is a new initiative for both schools, with 450 students from years 5 to 8 taking part. It is part of the StepUp4Kids program, where local businesses support schools that are supporting a charity.