You can use a UNION ALL
between the two queries:
SELECT *, '2013' Source
FROM student
WHERE graduation_year = 2013
UNION ALL
SELECT *, '2014' Source
FROM student
WHERE graduation_year = 2014
I added a field called source if you need to identify what dataset the row came from, this can be excluded if not needed.
If you want this in a temp table you can use some like this:
select *
into #temp
from
(
SELECT *, '2013' Source
FROM student
WHERE graduation_year = 2013
UNION ALL
SELECT *, '2014' Source
FROM student
WHERE graduation_year = 2014
) src
select * from #temp