Mae’n ofyniad statudol o dan Ddeddf Safonau a Threfniadaeth Ysgolion 2013 i bob Awdurdod Lleol yng Nghymru gyflwyno Cynllun Strategol y Gymraeg Mewn Addysg (CSGA). Pan ddaeth drafft o gynlluniau 2017-20 i law y cyn-Weinidog y Gymraeg a Dysgu Gydol Oes, penderfynwyd bod angen gwneud rhagor o waith am nad oeddent yn dangos uchelgais ddigonol i gyflawni Strategaeth Cymraeg 2050: Miliwn o siaradwyr.
As part of the School Standards and Organisation (Wales) Act 2013, it is a statutory duty for all Local Authorities in Wales to submit a Welsh in Education Strategic Plan (WESP).  Following receipt of the draft plans for 2017-20, the previous Minister for the Welsh Language and Lifelong Learning decided that further work was required as they lacked the ambition to achieve the Welsh Government’s Welsh Language strategy, Cymraeg 2050: A million Welsh speakers.