A Government school was opened at on Monday 3rd April, 1865. The mistress selected for the very large number of candidates was a Miss Tow of Helstone, Cornwall.
The following is a report in the 12 May 1866 issue of the Merthyr Express.
The mixed school at Pantywaun was inspected by Rev H. Binns on Tuesday last. The school is reported to be in a flourishing condition, both in respect of attendance, and as regards general efficiency of scholars, a fact speaking much of the teaching, when we remember the school is only in its infancy, the isolation of the district, and moreover, that many of the scholars on their admittance, are quite ignorant of the English language.
The Cwmysgwyddgwyn Chapel School at was opened on Friday 16th February 1866. The School had a very high pitched roof and was built by Messrs. Price & Jones. It stood on the side of the hill close to Darren Station.
On a Monday afternoon during early March 1870 the official ceremony of the laying of the foundation stone of the British School at Deri took place .
July 1871 At a meeting of the Gelligaer School Board at Pontlottyn in July 1871 it was resolved that the transfer of the Deri British School to the Gelligaer School Board be proceeded with at once.
In May 1879, the Ysgwyddgwyn School at Deri closed due to non payment of the school pence and having run up a very large deficit.