i'm lisa kwang, new principal at spring valley science school. spring valley is the oldest public school in san francisco. we just celebrated our 150th anniversary not that long ago and it's definitely a hidden gem in the city. we're located right between russian hill and knob hill and many families live in the neighborhood and many travel far and wide to come to our school mainly because we have such a talented and dedicated teaching staff. we have some of our teachers right here and as one of my duties as principal, i'm very pleased to have the opportunity to introduce one of our shining stars at spring valley, our second great teacher, ms. jennifer man. jennifer has taught at spring valley 18 years. she doesn't look like she's taught there for 18 years but she's had. she started there. that was her first teaching assignment and stayed there sin. that speaks to i think the quality of teachers there at the school. when you first meet jennifer you would think that she's shy but within that quiet demeanor beats the heart of a passionate educator.