There are quite a few kids at Glendale that don't have English as their first language: the school has about 60% ethnic minorities. However, it is brilliant at dealing with it and is an exemplar of how to do so, not just within Glasgow but in the UK. The previous headteacher (who got an MBE and OBE for her services to education) fought for a bi-lingual teacher (the first in the city), who, as well as the EAL teacher(s?) (English as an Additional Language) "team teaches" across the school, working closely the all the teachers. The new headteacher (not that new, she's been there 6 or 7 years) has kept the same ethos going.
As a result, ds often had two or three "teachers" (including class room assistants) in the class.
For those for whom English is their first language (like ds), no time is lost. Their time at primary school is enriched by learning about all the different religions and havig a wide range of friends. The only time I ever noticed "pandering" (and that's too strong a word), was at the Nativity Assembly when they sang "The little Lord baby Jesus" in "Away in a Manger". Over the year, they also do a Diwali Assembly and an Eid Assembly.
It's a school with a great atmosphere - if you visit, you'll see that every square inch of it is used (multiple times) and it is very welcoming. The only caveat I would add is that the school is about to be re-built (it's bursting at the seams), so there will no doubt be a degree of disruption while the building process is going on. There is going to be a Gaelic medium primary school (feeding to the Gaelic Secondary) attached to the new school.
Ds is now in S2 at Shawlands Academy (placing request as Glendale feeds to Bellahouston) along with few of his classmates. They're all doing well and ds feels he got a good start at Glendale.
Great school. :)