The majority of all sessions missed during the week of 11 January to 15 January were due to an absence directed by the school (code “Y”).
Roedd mwyafrif yr holl sesiynau a gollwyd yn ystod yr wythnos rhwng 11 Ionawr a 15 Ionawr naill ai oherwydd absenoldeb a gyfarwyddwyd gan yr ysgol (cod “Y”).