THA: Still work to be done on labs in Tobago schools Marslyn Melville-Jack - Secretary of Education, Innovation and Energy Marslyn Melville-Jack has said the labs at the Signal Hill Secondary School will be completed within a month. On Monday, when face-to-face learning resumed for secondary school students of forms four to six, Melville-Jack led a tour of schools on the island. She admitted that there is work to be done. “There are so many things that we can do better. Things are not perfect, and we don’t expect them to be perfect all at once – we know that these are unprecedented times,” she said.