School license

There are no free licenses, sorry.

But there are free and low cost alternatives you could use. 

OTHER TOOLS (raster & vector):
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- Affinity Photo & Affinity Designer: https://affinity.serif.com
- CorelDRAW Graphics Suite: https://www.coreldraw.com/
- GIMP: https://www.gimp.org/
- Gravit Designer: https://www.designer.io/en/
- Inkscape: https://inkscape.org/
- Krita: https://krita.org/
- Paint.NET: https://www.getpaint.net/
- PaintShop Pro: https://www.paintshoppro.com/
- PhotoPea: https://www.photopea.com/
- Photo Pos Pro: https://www.photopos.com/PPP3_BS/Default.aspx
- Pixlr: https://pixlr.com/
- Vctr: https://vectr.com/

Sherlock, please contact your school to see if they offer a Creative Cloud membership.  If that is not available, please see https://helpx.adobe.com/x-productkb/policy-pricing/education-faq.html for information on applying for a Student and Teacher discount on a Creative Cloud membership.