Her experience as a teacher will still count for points because it's a skilled job.
Every job falls under some NOC code. The NOC code will tell you if it's a skilled job (0, A or B) or a low skilled (C or D). The way you find out, go to
http://www5.hrsdc.gc.ca/NOC/English/NOC/2006/Welcome.aspx and look for a job title. You will get some matches. The closest match in the job duties is the one you want. It will show you a 4 digit number, that is the NOC code.
If the NOC code starts with 0, it is a 0 skill type job, a manager position.
If the NOC code does not start with 0, then you have to look at the 2nd digit. If it's 1, then it is a skill level A job. If it is 2 or 3, it is a skill level B job. If it's 4 or 5, it is skill level C (low skilled). If it's 6, it is skill level D (low skilled).
For example, if you look for teacher, you will get many matches. One of them is "4142 Elementary School and Kindergarten Teachers". You can see this is a skill level A job because the 2nd digit is 1. You also get "6472 Elementary and Secondary School Teacher Assistants" at the bottom of the list and you can see that is a low skilled job (C level) because the 2nd digit is 4.
Since she has enough points, she can apply as a skilled worker right away as soon as she fits some category, see
http://www.cic.gc.ca/english/information/applications/skilled.asp Therefore it would be enough for her to study in Canada for one year to apply under category 3 or if she can get a job offer (AEO), see
http://www.hrsdc.gc.ca/eng/workplaceskills/foreign_workers/supperimm.shtml she would be able to apply under category 2.