The school probably would have got rid of them if they were from 2011 but you can always try and see if they have them and if they don't then contact the exam boards.
There is no standard. There are best practices, which may preclude your use if you are not paying, but associations' boards have the responsibility to collect from owners and to monitor use.
Anything Can Happen - 1952 is rated/received certificates of: Finland:S
Make It Happen - 2010 is rated/received certificates of: USA:PG-13
Anything Might Happen - 1935 is rated/received certificates of: UK:A
Make It Happen - 2009 is rated/received certificates of: USA:TV-PG (director's cut)
Paramount Pacemaker It Could Happen to You - 1947 is rated/received certificates of: USA:Approved
It Shouldn't Happen to a Vet - 1977 is rated/received certificates of: Iceland:L UK:U USA:G
Accidents Happen - 2009 is rated/received certificates of: Australia:M Germany:12 USA:R (certificate #46039)
Accidents Will Happen - 1938 is rated/received certificates of: USA:Approved (PCA #3723) USA:TV-G (TV rating)
Funny Things Happen Down Under - 1965 is rated/received certificates of: Australia:G
Contact Sam Cruise happened in 1986.
To collect the sunlight from the top side, and to collect CO2 from underneath. Otherwise, photosynthesis wouldn't happen without it's reactant.