There is so much confusion around Tantra. Tantra is a life philosophy. The Tantra branch of yoga grew from the common man's desire to connect with the divine and one's true self while still engaging in the trials and joys of every day life. It is a series of ancient practices and techniques designed for "the householder" to allow them to skillfully and mindfully engage in modern life while also taking the path of self-realization. The householder is the person with the family or job or obligations who is engaged in the world who cannot escape to a remote cave to practice yoga like the ascetics of old, but who still wants to benefit from the practice of yoga.
The Tantric yogi or yogini does not try to transcend the body to find God, but delves deep into the physical senses of the body to "wake up" awareness of the true self, not just the prattling of the mind, and directly engage with the divinity in each of us. Tantra is not a exploration of sex and intimacy (see Neo-Tantra). Tantra is not a religion. Tantra is a health-promoting path for everyone and anyone who wants to live a better life.
I hope you will find the classes, practices and teachings of Tantra as beneficial as I have found them to be in getting to know myself and the goodness that is in me and each of us.