The current head teacher since 2024 is Carol McArdle, following on from Allison Craig[1] who had taken office in 2021 following the retirement of Peter Bollen.

In 1977 the Trinity campus at Eastfield was opened,[5] although the Gateside buildings continued to be used by the school for a few years[3] (it was later used by South Lanarkshire College, and eventually demolished in 2008).

[5] A council-run sports centre and swimming pool (known as South Lanarkshire Lifestyle Eastfield)[7] constructed a few years earlier shares the site, with the facilities used by the Trinity pupils during the school day and available for community use at other times.

Around mid-October an awards ceremony is held to honour pupils who have achieved academically and through sports activities.

Before it was set on fire, it was due to be destroyed by contractors InspirdED onto whom the council had passed responsibility.