卒業 and 修了: school graduation and course completion
Compare planned high-school graduation and a photograph afterward with completed training and a full-course certificate condition. Identify the educational object and distinguish plan, completion, and condition.
What educational program is being completed?
卒業 (そつぎょう) concerns school graduation, while 修了 (しゅうりょう) concerns completing a course or program. The examples contrast high school with a three-month training program or a full course.
Identify the educational object together with the sentence's plan, completion, or condition. The graduation plan, photograph, training completion, and certificate relation are separate examples rather than one person's sequence of events.
A graduation plan and a photograph afterward
「来年の春に高校を卒業する予定だ。」 — “I plan to graduate from high school next spring.” 予定だ states a plan for high-school graduation next spring. The school and future timing are specified; graduation is not reported as already complete.
「卒業式の後、友人たちと校門の前で写真を撮った。」 — “After graduation, I took photographs with friends at the school gate.” The Japanese sentence specifies the time after the graduation ceremony, while the supplied English says After graduation. Preserve that difference rather than claiming the English quotation explicitly names the ceremony.
Completed training and the full-course condition
「三か月の研修を無事に修了した。」 — “I successfully completed the three-month training program.” The completed object is the three-month training program. 修了した reports its completion, and three months describes this program rather than a fixed duration for all completion.
「全課程を修了すると、証明書が交付される。」 — “A certificate is issued after completing the full course.” The sentence relates completion of the full course to issuance of a certificate. It does not report that a particular speaker has completed the course and received the certificate; the educational object is the full course.
What educational objects and times are stated in the high-school 卒業 and three-month training 修了 examples?
Show the answer and why
The 卒業 example concerns high school and plans graduation for next spring. The 修了 example concerns three-month training and reports completed training. Distinguish both the educational objects and the plan-versus-completion status.

