Your child was a recent participant in a Social Health program at his or her school.
( ( Your child ) ( ( was ( ( a ( recent participant ) ) ( in ( ( a ( Social ( Health program ) ) ) ( at ( ( ( his or ) her ) school ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP$ Your) (NN child)) (VP (VBD was) (NP (NP (DT a) (JJ recent) (NN participant)) (PP (IN in) (NP (NP (DT a) (NNP Social) (NNP Health) (NN program)) (PP (IN at) (NP (ADJP (PRP$ his) (CC or) (PRP$ her)) (NN school))))))) (. .)))
Your child's school has a Social Health program but, your child did not attend. 
( ( ( ( ( ( ( Your ( child 's ) ) school ) ( has ( a ( Social ( Health program ) ) ) ) ) but ) , ) ( ( your child ) ( ( did not ) attend ) ) ) . )
(ROOT (S (S (NP (NP (PRP$ Your) (NN child) (POS 's)) (NN school)) (VP (VBZ has) (NP (DT a) (NNP Social) (NNP Health) (NN program)))) (CC but) (, ,) (S (NP (PRP$ your) (NN child)) (VP (VBD did) (RB not) (VP (VB attend)))) (. .)))