The pupils, aged from 14-18, took part in the popular annual event at Robert Smyth Academy on Burnmill Road on Thursday February 6 - Friday February 7.
And they aim to have raised hundreds of pounds for their two chosen charities – the Teenage Cancer Trust and CLIC Sargent.
Here are Andrew Carpenter's photos from the event.
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1. Robert Smyth 2020 Lockin
Centre, Erin Brant before the Robert Smyth Academy 2020 Lockin raising money for Clic Sargent and Teenage Cancer Trust. | jpimedia Photo: PICTURE: ANDREW CARPENTER
2. Robert Smyth 2020 Lockin
Students parade in their teams before the start of the 2020 Lockin at Robert Smyth Academy. | jpimedia Photo: PICTURE: ANDREW CARPENTER
3. Robert Smyth 2020 Lockin
Students parade in their teams before the start of the 2020 Lockin at Robert Smyth Academy. | jpimedia Photo: PICTURE: ANDREW CARPENTER
4. Robert Smyth 2020 Lockin
Students parade in their teams before the start of the 2020 Lockin at Robert Smyth Academy. | jpimedia Photo: PICTURE: ANDREW CARPENTER