上演 and 上映: a students' play, future staging and screening order
Compare 上演 through a students' play and a future passive staging with 上映 through a planned film screening and switching off a phone before it begins.
上演 in a students' play and future staging
上演 (じょうえん) means performance or staging. 「文化祭で生徒たちの劇を上演した。」 means “The students performed a play at the school festival.” The English names the students as performers. Japanese 生徒たちの劇 links the play to the students but does not explicitly name who staged it.
「改訂した作品は来月から各地で上演される。」 means “The revised work will be staged in various places starting next month.” 上演される is passive, and 来月から places the staging from next month onward. The revised work is not identified as the same play as in the festival example.
上映 in a future screening and a prior action
上映 (じょうえい) means screening or showing. 「週末に古い映画が公民館で上映される。」 means “An old movie will be shown at the community center this weekend.” The old movie is the object of a future screening at the community center, rather than a completed viewing.
「上映が始まる前に携帯電話の電源を切った。」 means “I turned off my phone before the screening began.” The reported action is switching off the phone before the screening began. That order does not report watching the entire film.
Objects, participants and times
These 上演 examples concern staging a play or work, while the 上映 examples concern showing a movie. The revised work's staging next month and the weekend film screening are separate future events.
The students' relationship to a play, the people performing it and a work that will be staged are different pieces of information. Keep each translation's participant wording, the future passive and the before-screening order attached to its own example.
What will be staged, and when, in 改訂した作品は来月から各地で上演される?
Show the answer and why
The revised work will be staged in various places starting next month. The sentence is a future passive about the work, not completed staging or attendance, and it does not merge this work with the festival play or the phone-switching example.