2006年，學校為慶祝四十週年，成立咗「新界喇沙中學發展基金」，並籌得過百萬港元。款項除咗用來增添教學設施之外，亦用來設立獎學金同助學金。部份款項亦用作資助學生嘅交通、學習活動開支，以減輕家長負擔。唔少校友喺商界、學術界、科技界、醫學界、法律界及其他專業都有傑出表現。
In 2006, to celebrate its 40th anniversary, the school established the "La Salle Secondary School Development Fund in the New Territories" and raised over HK$1 million. In addition to increasing teaching facilities, the funds are also used to set up scholarships and bursaries. Part of the funds will also be used to subsidise students' transportation and learning activities to alleviate the burden on parents. Many alumni have distinguished themselves in business, academia, technology, medicine, law and other professions.