。
School's off a week from today.
Literal
Next-week [possessive-の] today [topic-は] school [topic-は] rest is.
来週の今日 ('a week from today,' literally 'next week's today') is a common compact way to refer to the same weekday a week from now. Note the double は: 来週の今日は marks the time topic, 学校は marks another sub-topic 'as for school.' This double-topicalization is characteristic Japanese for 'concerning [time], as for [item]...'