January
- 25 January - Manifesto for Essex Youth Summit. Headgate Theatre, 14 Chapel St North, Colchester CO2 7AT
March
- 13 March - Essex Build 2025. Hylands House, London Rd, Writtle, Chelmsford CM2 8WQ
- 14 March - SEEAT Science Fair. The Deanes School. Daws Heath Road, Benfleet SS7 2TD
- 20 March - Food Waste Masterclass. Edge Hotel School, Wivenhoe Park, Colchester CO4 3SQ
- 23 March - Maldon CLEP Community Climate Action Workshop. Maldon Town Hall, Market Hill, Maldon CM9 4RL
- 26 March - Sustainability in Education Conference. Anglia Ruskin University, Bishop Hall Lane Chelmsford CM1 1SQ
- 26 March - STEAM Expo. University of Essex, Wivenhoe Park, Colchester CO4 3SQ
- 27 March - Essex Healthy Schools Festival. The Brentwood Centre, Doddinghurst Road, Brentwood CM15 9NN
- 27 March - edie 25. Business Design Centre, 52 Upper St, London N1 0QH
May
- 10 May - Essex Early Years Conference 2025. New Hall School, The Avenue, Boreham, Chelmsford CM3 3HS
- 23-26 May - The Essex Green Weekend. The Othona Community, East End Road, Bradwell-on-Sea, Essex, CM0 7PN
June
- 18 June - Essex Teaching Awards. Venue TBC
- 23 June - KS3 Student Climate Change Summit - University of Essex, Wivenhoe Park, Colchester CO4 3SQ
- 24 June - Essex Schools Food and Farming Day. ARU Writtle, Lordship Road, Writtle CM1 3RR
- 25 June - Reset Connect. Excel London, 1 Western Gateway, London E16 1XL