Wikipedia outlines the attitudes of various cultures towards virginity including:
In Judaism, sex is not considered to be sinful. Though premarital sex is disapproved, there is no requirement for a female to be a virgin at her marriage, and a child born to an unmarried female is not regarded as illegitimate (mamzer) or subject to any social or religious disabilities.
Sex within marriage is considered a virtue (mitzvah, literally a 'commandment'). Jewish law contains rules related to protecting female virgins and dealing with consensual and non-consensual pre-marital sex. The thrust of Jewish law's guidance on sex is effectively that it should not be rejected, but should be lived as a wholesome part of life.
Frankly, this doesn't sound at all like the attitude toward virginity that I glean from reading the Tanakh. While the description seems to be technically accurate, it also uses weaselly language ("disapproved", "no requirement", "not regarded", etc.) to give the impression that virginity is no big deal.
Does the quoted text reflect the modern, Jewish attitude toward premarital sex? If it doesn't, how should this section be phrased to not mislead a non-Jew such as myself?
An example of a Torah passage that leads me to think virginity is a virtue would be:
[The priest who is exalted above his fellows] may marry only a woman who is a virgin. A widow, or a divorced woman, or one who is degraded by harlotry—such he may not marry. Only a virgin of his own kin may he take to wife—that he may not profane his offspring among his kin, for I the Lord have sanctified him.—Leviticus 21:13-15 (NJPS)