The phrase 'marked for completion' is correct and usable in written English.
You can use it when you are referring to something that is ready to have the final touches added to it in order to finish the task. For example, "I just need to add the finishing touches to the project; it's already been marked for completion."
Some might assign point or letter grades to small daily assignments, but if everyone just receives a check mark for completion, then you don't have to work hard to earn your daily credit.
All were marked for United Russia.
A follow-up phone call to the parent/guardian of the enrolled child or, where feasible, an additional visit 14 days after the most recent episode of RVGE to ascertain the clinical outcome of the episode marked the completion of procedures for the case.
For every participant, staff members marked the completion of each step (done or addressed: yes/no/partially) and mentioned any comments.
The day of fun, games and music on 7 October marked the completion of a special week-long training camp for young volunteers wanting to make a difference for children affected by the recent conflict between Israel and Hezbollah.
Elections in March 2008 for the National Assembly, the lower house of the new parliament, marked the completion of the change to a democratic system.
This moment marked the completion of a bypass around New York City that had been planned for decades.
The last ceremony, held four years later, on December 13 , 1968 marked the completion of the engineered river channel.
This period (1950 1975) marked the completion of the transformation to an increasing returns economic structure, where industry accounted for a growing share of output and employment (Rowthorn and Wells 1987; Singh 1977).
This marked the completion of the first stage of Operation Sana.
Each copy of the questionnaire was placed in a separate sealed envelope clearly marked with the date for completion (day 0 and day 7, respectively), and participants received written and telephone directions for completion.
