我是一名在美国 语言中心读书的学生.因为睡眠问题导致旷课次数过多 I-20已被语言学校cancer.

对，你可以呆在美国等新的I－20表，虽然到明年的1月16号入学，2但周内你有一个新的i-20，什么问题也没有，只要你拿到新的i-20即使新学校3月份再开学都没关系，status和visa是两回事，新学校会在给你I－20时会一并通知移民局你换了学校，上面的两个根本不懂只是凭自己的感觉信口开河。

是cancel掉了吧？ 可是签证呢？
如果签证被同时取消掉了的话是需要回国并且重新获取签证的
另外如果转学也是要获取新的签证才可以，因为签证上的学校名称要和I-20上的一致，如果不一致你很可能会在进出海关的时候遇到麻烦。
综合来说，还是建议你尽快拿到新的I-20 然后回国去重新签证（当然在你回去之前就预约吧，不然到时候如果要是没有办法预约的话就不好了），+也要和以前的学校说明你会回国去重新获取签证

不过出于保险起见你还是问一下你的新学校的教导主任之类的人，确认我以上所述的方法是确实可行的。

你现在还可以留在美国，但需要申请激活你的学生身份。
如果成功，就可以到新学校上课，只要是5个月之内上课就可以。
如果失败，就必须离开美国。

因为你的20表已经被取消，所以你的情况不属于普通的转学。
你是在这样的情况下：
An F-1 student with a Terminated SEVIS record wants to transfer to another school 。

移民局网上有关于你这样情况的详细指导：
以下摘至移民局网站：
http://www.ice.gov/sevis/f_1_transfers.htm#_Toc174419528
2.3. An F-1 student with a Terminated SEVIS record at your school wants to transfer to another school and asks, “What do I need to do?”
The student has three choices.
The first choice is that the student can apply to USCIS for reinstatement prior to transferring from your school. The student must maintain a full course of study at your school, and otherwise abide by the regulations governing F-1 students, while USCIS adjudicates the reinstatement. See the USCIS website for information on how to file for reinstatement. If reinstatement is denied, the student must leave the United States immediately. If the student does not leave, he or she may be placed in removal proceedings at any time under section 237(a)(C)(i) of the Immigration and Nationality Act.
The second choice is for the student to request that their Terminated record be transferred to the transfer-in school. Your school will need confirmation that the student was accepted in the new school.
On the transfer release date, the transfer-in DSO becomes responsible for the student’s SEVIS record, making the recommendation for reinstatement on the student’s SEVIS record, and issuing the student a new Form I-20 for Reason of Reinstatement.
The student will be responsible for properly filing for reinstatement with USCIS. The student must intend to pursue a full course of study at the next available term, or within 5 months, whichever is earlier, at the transfer-in school [8 CFR 214.2 (f)(16)(i)(C)]. The student must begin to attend the transfer-in school in the next available session even if reinstatement has not been adjudicated. If the reinstatement is denied, the student must depart the United States, risking the forfeiture of paid tuition at that school.
The third choice is for the student to get an Initial Form I-20 from the new school. The student must exit the United States and return as an initial entry in a new F-1 nonimmigrant status (initial admission). If the student chooses this option, he or she will need to pay the SEVIS I-901 fee. The student will also lose credit for any time accumulated towards qualification for benefits such as optional or curricular practical training. If the student’s visa is valid, he or she does not need a new visa if returning to the United States within 5 months of his or her exit date. If the student has a Terminated record because he or she failed to maintain status or because the student violated any provision of the Immigration and Nationality Act, the student may be denied re-entry to the United States under section 212(a)(6)(G) of the Immigration and Nationality Act.

必须先回国，拿着新I20然后再办签证。