Complex sentence: Like wise, most of the material presented in schools focus on a heterosexual perspective that encourages "abstinence until marriage," a typical practice accredited to various religious groups that promote the need of heterosexuality for a healthy sexual life.
Split into simpler sentences: Like wise, most of the material presented in schools focus on a heterosexual perspective that encourages "abstinence until marriage". This type of practices have been accredited to various religious groups that promote the need of heterosexuality for a healthy sexual life.