There is no place to do wudoo’ in the college; can she do tayammum?

Prayer is an important
matter, and it is not permissible to be careless about performing it. Rather
it must be done regularly at the proper times, as Allaah says
(interpretation of the meaning): 

“Verily, As‑Salaah (the
prayer) is enjoined on the believers at fixed hours”

[al-Nisa’ 4:103]

“Guard strictly (five
obligatory) As‑Salawaat (the prayers) especially the middle Salaah (i.e. the
best prayer ‑ ‘Asr). And stand before Allaah with obedience [and do not
speak to others during the Salaah (prayers)]”

[al-Baqarah 2:238]. 

If a person can find water
and is able to use it, it is not permissible for him to do tayammum.
Concerning that, the Messenger of Allaah (peace and blessings of Allaah
be upon him) said: “The prayer of one of you will not be accepted, in the
event of minor impurity, until he does wudoo’.” Narrated by al-Bukhaari
(6954) and Muslim (225). 

It is not permissible to do
tayammum unless there is no water available or there is the fear of harm if
it is used. Allaah says (interpretation of the meaning): 

“But if you are ill or
on a journey, or any of you comes after answering the call of nature, or you
have been in contact with women (i.e. sexual intercourse), and you find no
water, then perform Tayammum with clean earth and rub therewith your faces
and hands”

[al-Maa’idah 5:6]. 

Based on this, it is not
permissible for you to do tayammum when you are able to use water. You can
do wudoo’ inside the washroom, because there is nothing wrong with doing
wudoo’ there. And the one who fears Allaah, He will grant him a way out. 

And Allaah knows best.