A school in a foreign country, with the British flag.
A school in Britain proudly displays its national flag.
Not every foreign country is Britain. Just because a flag is being displayed doesn't mean it's a sign of pride.
exists s1 s2 x1 x2 x3.(n_flag(x3) & a_british(s2) & Theme(s2,x3) & a_topic(x1) & with(x1,x3) & in(x1,x2) & n_country(x2) & a_foreign(s1) & Theme(s1,x2) & n_school(x1))
exists e1 s1 s2 x1 x2 x3.(ne_geo_britain(x2) & a_proudly(s2) & Manner(e1,s2) & Theme(e1,x3) & Actor(e1,x1) & v_display(e1) & n_flag(x3) & a_national(s1) & Theme(s1,x3) & of(x3,x1) & n_thing(x1) & in(x1,x2) & n_school(x1))