KTVU 
 
 A 59-year-old preschool teacher has been arrested on child endangerment charges for allegedly putting an unknown substance into the drinking cups of her young students. 
 
 Morgan Hill police said Deborah Gratz, of Hollister, had been arrested after Kiddie Academy preschool officials reported that she had put Sominex -- an over the counter sleeping aid -- into the drinking cups of some of the children on Friday March 8, 2013. 
 
 A witness told authorities they observed Gratz placing an unknown substance into the drinking cups in her classroom filled with toddlers between one and two years of age. 
 
 Investigators said they were still working on a motive. 
 
 Gratz, a five-year veteran employee of the facility, was arrested after a search of her home on Monday turned up evidence in the case. 
 
 She was placed under arrest on felony charges of child endangerment and booked in the Santa Clara County main jail. 
 
 Anyone who may have information regarding this incident or if you believe that your child was under the care of Gratz while at the Kiddie Academy, please contact Morgan Hill Police Department Detective Joe Burdick at 408.779.2101 or the anonymous tip line at 408.947.STOP(7867). ||||| March 12, 2013 5:24 PM 
 
 PLEASANTON (CBS SF) — A former teacher at a Pleasanton preschool is being investigated for allegedly binding a 2-year-old girl’s ankles and wrists after she refused to go to sleep during naptime, school officials said. 
 
 The incident allegedly occurred at Centerpointe Christian Preschool at 3410 Cornerstone Court in Pleasanton on an unknown date. 
 
 School officials said that when the child refused to nap, the teacher taped up the girl’s ankles and wrists, and then took a photo. 
 
 During a March 1 social gathering attended by current and former teachers, the teacher in question—identified by the state Department of Social Services as Angela Calcagno—showed the photo to the other teachers, one of whom was the little girl’s mother, according to the school. 
 
 Calcagno, who had recently resigned from the school, told her former colleagues that she had warned the girl that she would tie her up during naptime if she didn’t sleep, school officials said. 
 
 The incident was reported to Pleasanton police by the child’s parent on March 4, the Monday after the social gathering. The Police Department sent investigators to the school to interview staff. 
 
 Pleasanton police did not immediately return calls for comment Tuesday. 
 
 School leaders said they notified the California Community Care Licensing Division, part of the state Department of Social Services, which issued a “Class A” violation against the school last Thursday. 
 
 According to the state’s investigation report, Calcagno used masking tape to bind the girl. The report states that the allegations were substantiated and that the girl’s rights were violated. 
 
 The department has since issued an order of exclusion against Calcagno, meaning that Calcagno cannot be on preschool grounds or have contact with the students. She is also barred from being hired by any other state-licensed child care facility in California. 
 
 The school has sent a letter to parents notifying them of the incident, school officials said. 
 
 The church community affiliated with the preschool has taken additional actions, preschool spokesman Tim Hunt said. 
 
 A meeting is scheduled for tonight to respond to parents’ questions and concerns. 
 
 Additionally, the preschool will be temporarily shut down for five days starting Friday for what Hunt said will be “intensive staff training, review of procedures and a thorough top-to-bottom review of the program.” 
 
 Officials said operations will resume on March 20. 
 
 The preschool was founded in 2008 when the church moved to its location at Cornerstone Court. The Centerpointe Presbyterian Church previously operated a co-op preschool for more than 30 years at a different location, school officials said. 
 
 In a staff biography that no longer appears on the Centerpointe website, Calcagno said she had been working at the preschool since June 2008. 
 
 When the bio was written, she said she was attending California State University East Bay and working toward a bachelor’s degree in psychology. She said she wanted to continue her education with a master’s degree in marriage and family therapy. 
 
 Until last October, the school had never had a “Class A” violation at its Cornerstone Court campus, Hunt said. 
 
 Since then, its violations have included incidents on Oct. 19 and Jan. 24 in which bleach was left within the reach of children. On that same day in January, there was a violation because children were left in the care of a 17-year-old, according to the school. 
 
 In each of the incidents, corrective action was taken and staff received additional training, school officials said. 
 
 In response to the recent naptime incident, church Pastor Mike Barris released a statement on Monday evening. 
 
 “We are appalled and shocked that such an incident, if proven to be true, took place,” Barris said. “Every human person made in the image of God, all of the children in our care, deserve the highest degree of respect and protection from any action that dehumanizes them.” 
 
 (Copyright 2013 by CBS San Francisco and Bay City News Service. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)
– Two Northern California preschool teachers are accused in separate, equally disturbing incidents: In Morgan Hill, Deborah Gratz was arrested after officials at the Kiddie Academy reported her for allegedly putting an over-the-counter sleeping aid into some kids' drinking cups. A witness saw Gratz, 59, putting Sominex into the cups in her classroom of 1- and 2-year-olds. Authorities found evidence in Gratz's home, but have not uncovered a motive, KTVU reports. In Pleasanton, Angela Calcagno is being investigated by police for allegedly using masking tape to bind the ankles and wrists of a 2-year-old girl who refused to take a nap, CBS San Francisco reports. Bizarrely, Calcagno took a picture of the bound toddler and showed it to other teachers, including the girl's mother, at a social gathering. Calcagno, who had recently resigned from Centerpointe Christian Preschool, told the teachers she had warned the girl what would happen if she didn't cooperate with naptime. The child's mother reported her.